43230021 has 8 divisors (see below), whose sum is σ = 57676320. Its totient is φ = 28801872.

The previous prime is 43230001. The next prime is 43230043. The reversal of 43230021 is 12003234.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 43230021 - 2¹⁴ = 43213637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43230001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2650 + ... + 9668.

It is an arithmetic number, because the mean of its divisors is an integer number (7209540).

Almost surely, 2^43230021 is an apocalyptic number.

It is an amenable number.

43230021 is a deficient number, since it is larger than the sum of its proper divisors (14446299).

43230021 is a wasteful number, since it uses less digits than its factorization.

43230021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9075.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 43230021 is about 6574.9540682806. The cubic root of 43230021 is about 350.9633893358.

Adding to 43230021 its reverse (12003234), we get a palindrome (55233255).

The spelling of 43230021 in words is "forty-three million, two hundred thirty thousand, twenty-one".